linux-kernel - Re: [PATCH] video: fbdev: pmag-ba-fb: Fix the lower margin size

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Date:	Fri, 26 Feb 2016 13:04:31 +0200
From:	Tomi Valkeinen <tomi.valkeinen@...com>
To:	"Maciej W. Rozycki" <macro@...ux-mips.org>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>
CC:	<linux-fbdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] video: fbdev: pmag-ba-fb: Fix the lower margin size

On 22/02/16 03:54, Maciej W. Rozycki wrote:
> According to the board specification[1] the width of the vertical sync 
> front porch is 12 pixels or the same as the width of the horizontal sync 
> front porch.  This in turn means the size of the lower margin is 0, 
> because the vertical sync starts as soon as the start of the horizontal 
> sync terminates the last line.
> 
> References:
> 
> [1] "PMAG-BA TURBOchannel Color Frame Buffer Functional Specification",
>     Revision 1.2, Workstation Systems Engineering, Digital Equipment
>     Corporation, August 27, 1990, Table 3-5: "Video Timing"
> 
> Signed-off-by: Maciej W. Rozycki <macro@...ux-mips.org>
> ---
> linux-pmag-ba-lower.patch
> Index: linux-20150524-4maxp64/drivers/video/fbdev/pmag-ba-fb.c
> ===================================================================
> --- linux-20150524-4maxp64.orig/drivers/video/fbdev/pmag-ba-fb.c
> +++ linux-20150524-4maxp64/drivers/video/fbdev/pmag-ba-fb.c
> @@ -60,7 +60,7 @@ static struct fb_var_screeninfo pmagbafb
>  	.left_margin	= 116,
>  	.right_margin	= 12,
>  	.upper_margin	= 34,
> -	.lower_margin	= 12,
> +	.lower_margin	= 0,
>  	.hsync_len	= 128,
>  	.vsync_len	= 3,
>  	.sync		= FB_SYNC_ON_GREEN,
> 

Thanks, queued for 4.6.

 Tomi



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